Twitter feed is inconsistent

Hello all. I really like this theme but I’ve had an issue with the Max Latest Tweets and other similar plug-ins. The page sometimes loads these tweets but on other occasions it just shows the heading ‘Latest Tweets’ and an empty space below. If I mouse over the space, it changes to a hand where the thumb of the profile picture should be but I can’t see anything there. The strange thing is that it sometimes shows and other times doesn’t! This happens with the each recent tweets type plug ins I’ve used so I’m wondering if there’s a conflict with the theme. Any ideas?